AppManager 用于Activity管理和应用程序退出

package com.xiaxiue.a.userlogin.utils;

import android.app.Activity;
import android.app.ActivityManager;
import android.content.Context;

import java.util.Stack;

/**

• 应用程序Activity管理类：用于Activity管理和应用程序退出
• @author ztf

*/
public class AppManager {

private static Stack activityStack;
private static AppManager instance;

private AppManager(){}
/**
 * 单一实例
 */
public static AppManager getAppManager(){
    if(instance==null){
        instance=new AppManager();
    }
    return instance;
}
/**
 * 添加Activity到堆栈
 */
public void addActivity(Activity activity){
    if(activityStack==null){
        activityStack=new Stack();
    }
    activityStack.add(activity);
}
/**
 * 获取当前Activity（堆栈中最后一个压入的）
 */
public Activity currentActivity(){
    Activity activity=activityStack.lastElement();
    return activity;
}

/**
 * 结束当前Activity（堆栈中最后一个压入的）
 */
public void finishActivity(){
    Activity activity=activityStack.lastElement();
    finishActivity(activity);
}
/**
 * 结束指定的Activity
 */
public void finishActivity(Activity activity){
    if(activity!=null){
        activityStack.remove(activity);
        activity.finish();
        activity=null;
    }
}
/**
 * 结束指定类名的Activity
 */
public void finishActivity(Class cls){
    for (Activity activity : activityStack) {
        if(activity.getClass().equals(cls) ){
            finishActivity(activity);
        }
    }
}
/**
 * 结束所有Activity
 */
public void finishAllActivity(){
    for (int i = 0, size = activityStack.size(); i < size; i++){
        if (null != activityStack.get(i)){
            activityStack.get(i).finish();
        }
    }
    activityStack.clear();
}
/**
 * 结束了指定类名以外的所有Activity
 * 
 */
public void finishAllActivity(Class cls){
    for (Activity activity : activityStack) {
        if(!activity.getClass().equals(cls) ){
            finishActivity(activity);
        }
    }
}
/**
 * 退出应用程序
 */
@SuppressWarnings("deprecation")
public void AppExit(Context context) {
    try {
        finishAllActivity();
        ActivityManager activityMgr= (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        activityMgr.restartPackage(context.getPackageName());
        System.exit(0);
    } catch (Exception e) { }
}

}